D-PVM-OE-01 Sample Questions Answers

Step by Step Comprehensive Detailed Explanation:

In an SRDF (Symmetrix Remote Data Facility) disaster recovery scenario where production has been switched to the R2 devices at the target site, theResumeoperation allows the primary hosts to regain access to the R1 devices without waiting for a full data transfer from the R2 devices.

Here's how it works:

R1 Access:The Resume operation makes the R1 devices (at the primary site) accessible to the primary hosts.

Background Synchronization:While the hosts access and modify data on the R1 devices, SRDF continues to synchronize the changes from the R2 devices (at the target site) in the background. This ensures that the R1 devices are gradually updated with any changes that occurred on the R2 devices during the failover.

This approach minimizes downtime and allows for a quicker return to the primary site without waiting for a lengthy synchronization process to complete before granting host access.

Why other options are incorrect:

A. Update:This operation copies changes from R2 to R1, but it doesn't necessarily grant immediate host access to R1.

B. Fallback:This is a more comprehensive process that involves reversing replication direction and fully restoring the primary site as the production environment.

C. Failover:This operation switches production to the R2 devices, not the R1 devices.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 SRDF Family CLI User Guide:This guide provides detailed information about SRDF commands and operations, including the symrdf resume command. You can find this document on the Dell Support website by searching for "Solutions Enabler SRDF Family CLI User Guide."

Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a comprehensive overview of SRDF and its functionalities, including disaster recovery scenarios and the use of the "Resume" operation.

The Workload Planner then compares the two values to the maximum response time associated with its given service level. If both calculated values fall within (under) the service level defined response time band, the compliance state is STABLEhttps://www.dell.com/support/kbdoc/en-us/000022528/how-does-the-workload-planner-function

https://visiondatacenter.com/products/DELLEMC_VMAX450F/vmax-software-datasheet.pdf

Step by Step Comprehensive Detailed Explanation:

Before performing an SRDF/S (synchronous) Restore operation, it is crucial tostop all host I/O activityto both the R1 (source) and R2 (target) devices. This ensures data consistency and prevents potential data loss or corruption during the restore process.

Here's why:

Data Integrity:An SRDF/S Restore operation involves copying data from the R1 device to the R2 device, overwriting any existing data on R2. If hosts are actively accessing and modifying data on either device during this process, it can lead to inconsistencies and data integrity issues.

Synchronization:SRDF/S maintains real-time synchronization between the R1 and R2 devices.1Performing a Restore operation while hosts are writing data can disrupt this synchronization and lead to unpredictable results.  

Why other options are incorrect:

A. Continue accessing the R1 devices. Stop accessing the R2 devices:This would leave R1 vulnerable to data inconsistencies.

B. Stop accessing the R1 devices. Continue accessing the R2 devices:This would make R2 susceptible to data loss or corruption.

D. Continue accessing the R1 and R2 devices:This is the most dangerous option, as it would likely lead to data integrity issues.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 SRDF Family CLI User Guide:This guide provides detailed information about SRDF operations, including Restore. It emphasizes the importance of halting host I/O before performing such operations to ensure data consistency. You can find this document on the Dell Support website by searching for "Solutions Enabler SRDF Family CLI User Guide."

Dell PowerMax Family: Essentials and Best Practices Guide:This guide may offer general information about SRDF management and best practices, which would include recommendations for performing operations like Restore safely.

Okay, I understand. The task is to verify the completion of Non-Disruptive Migrations (NDM) and then remove the migration environment using the Unisphere for PowerMax simulator.

Here's a step-by-step guide on how to do this, based on typical Unisphere functionality and the context of the question:

Steps:

1. Launch the Simulator and Navigate to the Migration Section

Open Unisphere for PowerMax in your web browser.

Log in to the simulator.

In the left-hand navigation pane, locate the section related to migrations. This is usually under either:

Data Mobility

Migration

Expand the relevant section and click onMigrations(or a similar option like "Local Migrations" or "NDM"). This will take you to the view where you can manage Non-Disruptive Migrations.

2. Verify Migration Session Status

The Migrations view will list all current and past migration sessions.

Look for the following status indicators to confirm that the migrations have completed successfully:

Status:The status should typically be "Completed," "Cutover Complete," or a similar status indicating successful completion.

Progress:If a progress bar or percentage is shown, it should be at 100% or show that all data has been synchronized.

Important:If any sessions are still in a "Running," "Synchronizing," or other non-completed state, do not proceed with removing the migration environment. Wait for them to complete.

3. Select Completed Migrations for Removal

Once you've verified that all relevant migration sessions are successfully completed, select the sessions that you want to remove.

You can usually select sessions by:

Clicking a checkbox next to each session.

Clicking on the session itself (if the interface allows it).

4. Remove the Migration Environment

After selecting the completed migration sessions, look for an action button or menu option to remove them. This might be labeled:

"Remove"

"Delete"

"Cleanup"

"Remove Session"

Click the appropriate button to initiate the removal process.

Confirmation:You will likely be prompted with a confirmation message to make sure you want to remove the selected migration sessions. Verify that you have selected the correct sessions and confirm the removal.

5. Verify Removal (Optional)

After the removal operation completes, the Migrations view should refresh.

Verify that the migration sessions you removed are no longer listed.

Okay, I understand. We need to configure a recurring exclusion window in the Unisphere for PowerMax simulator to exclude performance load during a weekly backup that occurs every Sunday from 8:00 AM to 9:00 AM. This exclusion will prevent the backup load from affecting system-level compliance calculations.

Here's a step-by-step guide on how to do this, based on typical Unisphere functionality:

Steps:

1. Launch the Simulator and Navigate to the System Settings

Open Unisphere for PowerMax in your web browser.

Log in to the simulator (you should already be logged in with the array SID 1762 selected, based on the image).

In the left-hand navigation pane, locate the settings or configuration section. The exact location might vary slightly, but it's often found under:

Home>System Settings

Settings(an icon representing settings, like a gear)

Admin>System

In this instance, click thegearicon on the top right corner of the Unisphere interface.

2. Find the Exclusion Window Settings

Within the system settings, look for a section related to performance monitoring, metrics, or thresholds.

Within this section, search for an option to configure "Exclusion Windows," "Scheduled Exclusions," or something similar. The exact name may vary.

3. Create a New Exclusion Window

Click on a button or link to create a new exclusion window. This might be labeled:

"Create"

"Add"

"+"(a plus icon)

A new window or panel will appear, allowing you to configure the exclusion window settings.

4. Configure the Exclusion Window Settings

Name (Optional):You can give the exclusion window a descriptive name, such as "Weekly Backup Exclusion."

Type:Select"Recurring"or"Repeating"as the exclusion window type.

Schedule:

Day of the Week:Select"Sunday".

Start Time:Set the start time to 08:00 (or 8:00 AM). Make sure the time is in 24-hour format or that you correctly select AM if using 12-hour format.

End Time:Set the end time to 09:00 (or 9:00 AM).

Scope/Target:Since we want this exclusion to apply at the system level, make sure the scope is set to"System"or the entire array (SID 1762 in this case). You might not need to explicitly select this if system-level is the default.

Components/Metrics:In some Unisphere versions, you can choose which components or metrics to exclude. In our case, we want to exclude the load for "all components." If there's an option to select components, either choose "All" or leave it at the default (which likely includes all components).

5. Save the Exclusion Window

After configuring all the settings, review them carefully to make sure they are correct.

Click the button to save the exclusion window. This might be labeled:

"Create"

"Save"

"OK"

"Apply"

6. Verify Exclusion Window Creation (Optional)

After the exclusion window is created, you can usually verify its settings in the exclusion window list.

You should see the new exclusion window listed with the correct schedule (Sunday, 8:00 AM - 9:00 AM) and scope (system level).

Topic2, Multiple Choice Questions

Step by Step Comprehensive Detailed Explanation:

Unisphere for PowerMax provides a "System > Hardware" view that offers insights into the physical components of your PowerMax storage array. On newly installed 2000 and 8000 series arrays, this view would typically show information about:

Front-end directors:These directors handle host connectivity and data transfer to and from the array. The view would likely display details about the number of front-end directors, their types, and their status.  

Back-end directors:These directors manage the connection to the physical disks (storage media) within the array. The view may show the number of back-end directors, their types, and their status.

RDF (Remote Data Facility):If the array is configured for SRDF replication, the hardware view might display information about the RDF directors or components responsible for managing remote replication.

Why other options are incorrect:

A. Capacity, performance, and protection:While these are important aspects of a PowerMax system, they are typically found in other sections of Unisphere, such as the "Dashboard" or "Storage" views.

B. Provision, protect and set host I/O limits:These are management functions accessible through Unisphere, but not typically displayed directly under the "System > Hardware" view.

D. I/O Profile, performance thresholds, and anomaly detection:These are related to performance monitoring and analysis, which are usually found in the "Performance" section of Unisphere.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Unisphere for PowerMax 10.0.0 Online Help:The online help for Unisphere provides detailed information about the different views and functionalities available within the tool. You can access this help within Unisphere itself or on the Dell Support website.  

Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a general overview of PowerMax systems and their management using Unisphere. It may provide context for understanding the information displayed in the "System > Hardware" view.

1.Shunt down testvm on the primary esxi server

2. unregister testvm.

3.Unamount testds .

4.perform a failover operation.

1.view old HBA WWN

2.swap out the old HBA

3.Discover the WWN

4.Use the replace action

5.Use the rename action

Step by Step Comprehensive Detailed Explanation:

Solutions Enabler (SE) 10 introduces some changes to the output format of certain commands for better clarity and consistency. When querying a PowerMax 2000 (which is based on older VMAX architecture) using symcfg list -dir, you might encounter differences in the output compared to previous SE versions.

To ensure backward compatibility and see the output in the familiar format, you need to use the -mode v9x argument. This tells SE 10 to display the output in the style of SE 9.x, which is compatible with the PowerMax 2000.

Why other options are incorrect:

B. Look for CPU instead of Cores as these have been rebranded...:While there might be terminology changes, this is not the primary reason for the output difference.

C. Specify the full 12-digit serial number with -sid so SE 10 understands...:The serial number is not directly related to the output format.

D. Use syraconfigure -version -dir as in SE 10 support for outputs...:The syraconfigure command is not the correct command for this purpose.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 CLI User Guide:This guide provides detailed information about the symcfg command and its options, including the -mode argument for backward compatibility. You can find this document on the Dell Support website by searching for "Solutions Enabler CLI User Guide."

Host I/O Limits in PowerMax allow you to control the maximum IOPS (Input/Output Operations Per Second) or bandwidth that a storage group can consume. This helps prevent performance issues caused by one application or workload monopolizing resources.

When you associate Host I/O Limits with a Storage Group, the default Dynamic I/O distribution mode is set toNever.

Never:This means that the I/O limits are statically distributed across the directors in the associated masking view. If a director fails, its allocated portion of the I/O limit is lost. This is the most conservative setting, as it ensures that the I/O limits are strictly enforced even in the event of a director failure.

You can change this setting toBalancedorAlwaysif you need more dynamic distribution of I/O limits.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell PowerMax and VMware vSphere Configuration Guide:This guide provides detailed information about Host I/O Limits, including the different distribution modes and their benefits. You can find this document on the Dell Support website by searching for "PowerMax and VMware vSphere Configuration Guide."

Dell Solutions Enabler 10.0.0 CLI User Guide:This guide provides information on how to set Host I/O Limits using SYMCLI commands, including the -dynamic option for specifying the distribution mode.

Here's the correct sequence of steps along with explanations:

Correct Order:

Select Data Protection > Device Groups from the navigation pane.

Why:This is the starting point within Unisphere for PowerMax. You need to navigate to the section where device groups are managed and where TimeFinder operations are initiated.

Select a PowerMax array.

Why:In an environment with multiple PowerMax arrays, you must specify the array on which you want to create the clone copy sessions.

Select a group and click Create Pairs.

Why:You are selecting the specific device group that will be the source for the clone operation and choosing the "Create Pairs" action to initiate the clone session creation process. This implies you are creating a clone from an existing group of devices.

Select a source type and a target type.

Why:This step defines the characteristics of the source and target devices for the clone session. This could involve selecting from different storage groups, specifying thin or thick provisioning, or other relevant settings. Note that in a clone context, the "target type" often refers to how the clone will be linked to the source (e.g., a full copy or a linked target).

Click Run Now to run the operation.

Why:After configuring all the settings for the clone session, this action triggers the actual creation of the clone pairs based on the selected source and target types and other parameters.

Click the TimeFinder Clone tab to view the list of clones.

Why:Once the operation has been initiated, this is how you would verify that the clone sessions were created successfully and monitor their status.

Select Data Protection > Device Groups from the navigation pane.

Select a PowerMax array.

Select a group and click Create Pairs.

Select a source type and a target type.

Click Run Now to run the operation.

Click the TimeFinder Clone tab to view the list of clones.

Step by Step Comprehensive Detailed Explanation:

The Port Attributes page in Unisphere for PowerMax allows storage administrators to configure various settings related to the front-end ports on the storage array. One of the functions available on this page isSelect Mgt Option.

This option allows you to specify how the port is used for management purposes:

Dedicated Management Port:You can designate a port as a dedicated management port, which is used exclusively for communication with management tools like Unisphere and Solutions Enabler.  

Shared Management Port:You can configure a port to be shared for both management traffic and host I/O traffic.

This flexibility allows you to optimize port usage and segregate management traffic if needed.

Why other options are incorrect:

A. Manage Protocol:Protocol settings (like FC or iSCSI) are typically configured elsewhere in Unisphere, not on the Port Attributes page.

C. Volume Set Addressing:Volume Set Addressing is a feature related to mainframe connectivity and is not directly managed through the Port Attributes page.

D. ORS Ceiling:ORS (Open Replicator Solutions) settings are managed separately and not through the Port Attributes page.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Unisphere for PowerMax 10.0.0 Online Help:The online help for Unisphere provides detailed information about the Port Attributes page and the available configuration options, including the "Select Mgt Option" function. You can access this help within Unisphere itself or on the Dell Support website.

Dell PowerMax Family: Essentials and Best Practices Guide:This guide may offer general information about port management and configuration in PowerMax.

Step by Step Comprehensive Detailed Explanation:

In SRDF (Symmetrix Remote Data Facility), a "Restore" operation is used to resynchronize the source (R1) and target (R2) devices after a situation where the target device might have been modified independently. This typically occurs after a failover scenario where the target device becomes the primary and undergoes changes.

During an SRDF Restore operation:

R2 Changes Discarded:Any changes made to the target (R2) device since the last synchronization are discarded.

R1 Changes Propagated:The current data on the source (R1) device is copied over to the target (R2), overwriting any existing data on the target.

This effectively restores the target device to a state consistent with the source device, ensuring data integrity and consistency.

Why other options are incorrect:

B. Resumes normal SRDF mirroring and host access:While a Restore operation can be part of the failback process, it's not the only step involved. Failback might involve additional actions like reversing replication direction and restoring host access.  

C. Changes made to the R2 are propagated to the R1. Changes made to the R1 are discarded:This describes an "Update" operation, not a "Restore."

D. Enables access to both the R1 and R2 devices for their hosts:This describes a "Split" operation, where both devices are made accessible independently.

References and documents of Dell's public documentation for PowerMax Operate v.2:

Dell Solutions Enabler 10.0.0 SRDF Family CLI User Guide:This guide provides detailed information about SRDF commands and operations, including the symrdf restore command. You can find this document on the Dell Support website by searching for "Solutions Enabler SRDF Family CLI User Guide."

Dell PowerMax Family: Essentials and Best Practices Guide:This guide offers a comprehensive overview of SRDF and its functionalities, including disaster recovery scenarios and the use of the "Restore" operation.

We need to terminate a clone session for the storage group named "DATA" in the Unisphere for PowerMax simulator.

Here's a step-by-step guide on how to do this, based on typical Unisphere functionality and the context of the question:

Steps:

1. Launch the Simulator and Navigate to the TimeFinder/Clone Section

Open Unisphere for PowerMax in your web browser.

Log in to the simulator (you should already be logged in with the array SID 1762 selected, based on the provided image).

In the left-hand navigation pane, locate the section related to TimeFinder operations. This is usually found under:

Data Protection

Local Protection

TimeFinder

Expand the relevant sections and click onTimeFinder SnapVXorTimeFinder Clone(the exact wording might vary slightly in the simulator). The goal is to get to the view where you can manage clone sessions.

2. Locate the Clone Session for the "DATA" Storage Group

The TimeFinder/Clone view will display a list of existing clone sessions.

You need to find the session associated with the "DATA" storage group. Look for the following:

Storage Group Name:The "DATA" storage group should be listed as the source of the clone session.

Session Type/Mode:Verify that it's a Clone session (not a SnapVX snapshot or another type of session).

3. Select the Clone Session

Once you've found the correct clone session for the "DATA" storage group, select it.

You can usually do this by:

Clicking a checkbox next to the session.

Clicking on the session itself (if the interface allows it).

4. Terminate the Clone Session

After selecting the clone session, look for an action button or menu option to terminate it. This might be labeled:

"Terminate"

"Delete"

"Remove"

"Fracture"(in some older versions)

"Stop"

Click the appropriate button to initiate the termination process.

Confirmation:You will likely be prompted with a confirmation message to ensure you want to terminate the selected clone session. Verify that you have selected the correct session (the one for the "DATA" storage group) and confirm the termination.